1118597477 has 2 divisors, whose sum is σ = 1118597478. Its totient is φ = 1118597476.

The previous prime is 1118597453. The next prime is 1118597497. The reversal of 1118597477 is 7747958111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 818303236 + 300294241 = 28606^2 + 17329^2 .

It is a cyclic number.

It is not a de Polignac number, because 1118597477 - 2²⁸ = 850162021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1118597437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559298738 + 559298739.

It is an arithmetic number, because the mean of its divisors is an integer number (559298739).

Almost surely, 2^1118597477 is an apocalyptic number.

It is an amenable number.

1118597477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118597477 is an equidigital number, since it uses as much as digits as its factorization.

1118597477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 493920, while the sum is 50.

The square root of 1118597477 is about 33445.4403020800. The cubic root of 1118597477 is about 1038.0651516557.

The spelling of 1118597477 in words is "one billion, one hundred eighteen million, five hundred ninety-seven thousand, four hundred seventy-seven".